The ZTE Blade A611T (model BA611T) is a budget-friendly 4G smartphone from 2016 designed with a focus on excellent battery life. Its key feature is a large 4000 mAh battery, providing outstanding endurance for its time. Powered by a MediaTek MT6735M processor and featuring a 5.0-inch HD display, it was a reliable daily driver. This guide provides the official stock ROM, which is essential for unbricking the device, fixing software bugs, removing a Google FRP lock, or restoring the phone to its original factory state.
Important: This firmware is specifically for the ZTE Blade A611T (BA611T). As a MediaTek device, it requires the SP Flash Tool for flashing. Flashing this on a different model will cause a hard brick. This process will erase all data on your device.
Quick Device Specs
- Device: ZTE Blade A611T (BA611T)
- Release year: 2016
- Chipset: MediaTek MT6735M
- Display: 5.0″ IPS LCD, HD
- Battery: 4000 mAh
- Original OS: Android 5.1 (Lollipop)
Required Downloads
To flash a MediaTek device, you will need the specific drivers and flashing tool. You can find the downloads for these in our main guide linked below.
- SP Flash Tool
- MediaTek VCOM USB Drivers
Stock ROM (Firmware)
| Android | Type | Download | Chipset |
|---|---|---|---|
| 5.1 | SP Flash Tool Firmware | Download | MediaTek |
How to Flash the Stock Firmware
Flashing the stock ROM onto your ZTE Blade A611T requires a Windows PC and the SP Flash Tool. The process involves installing the MediaTek VCOM drivers, loading the MT6735M_Android_scatter.txt file from the firmware into the tool, and then connecting your powered-off phone to start the flash. This will completely restore your device to its original factory software.
For detailed, step-by-step instructions with screenshots and tool download links, please follow our comprehensive pillar guide: How to Flash Firmware with SP Flash Tool.
Device-Specific Troubleshooting for ZTE Blade A611T
- Correct Driver Installation: The most common failure point is incorrect drivers. If the tool doesn’t see your phone, you must install the MediaTek VCOM drivers, which often requires you to disable ‘Driver Signature Enforcement’ in Windows first.
- Using the “Boot Key”: To initiate the flash, power the phone off completely. Press and hold the Volume Down button, and while holding it, connect the phone to your PC. The tool should then detect it and begin the process. If Volume Down doesn’t work, try holding Volume Up.
- Fixing Google FRP Lock: If you’re locked out of your phone by Google’s Factory Reset Protection (FRP), flashing this stock ROM will perform a complete wipe and remove the locked account.
- Safer Flashing (Uncheck Preloader): For a safer flashing process that is less likely to cause a hard brick, it is highly recommended to uncheck the `preloader` partition in SP Flash Tool before clicking Download. Flashing an incorrect preloader is the most common cause of a permanently dead phone.
FAQs
Q1. What does the ‘T’ in the BA611T model number mean?
The ‘T’ often signifies a specific regional or carrier variant, possibly one designed for TD-LTE networks which are common in some parts of the world. It is crucial to ensure this firmware matches your device’s model number to avoid network and modem issues.
Q2. My phone’s battery drains quickly. Will this fix it?
Flashing the stock ROM can solve software-related battery drain caused by rogue apps or system bugs. However, as this is an old device, the physical battery has likely degraded over time. If the drain persists after a clean flash, the battery hardware itself is probably the cause.
Q3. What is a “scatter file”?
The scatter file (e.g., MT6735M_Android_scatter.txt) is a crucial map for MediaTek firmware. It tells SP Flash Tool the name, size, and location of every partition on the device’s storage, ensuring each part of the software is flashed to the correct place.
Q4. Will this process erase my data?
Yes. Flashing the stock ROM with SP Flash Tool will perform a full factory reset and completely wipe all personal data, apps, and settings from your device.
